created: 20140720164948099
modified: 20201124185829706
tags: Mechanisms
title: InfoMechanism
type: text/vnd.tiddlywiki

\procedure example(name)
<$text text={{{ [[$:/info/url/]addsuffix<name>get[text]] }}} />
\end

System tiddlers in the namespace `$:/info/` are used to expose information about the system (including the current browser) so that WikiText applications can adapt themselves to available features.

! Information Tiddlers

|!Title |!Description |
|[[$:/info/startup-timestamp]] |<<.from-version "5.1.23">> Startup timestamp in TiddlyWiki date format |
|[[$:/info/browser]] |Running in the browser? ("yes" or "no") |
|[[$:/info/mobile]] |<<.from-version "5.2.3">> Is running on a mobile device? ("yes" or "no" - eg, ''<<example full>>'') |
|[[$:/info/browser/language]] |<<.from-version "5.1.20">> Language as reported by browser (note that some browsers report two character codes such as `en` while others report full codes such as `en-GB`) |
|[[$:/info/browser/screen/width]] |Screen width in pixels |
|[[$:/info/browser/screen/height]] |Screen height in pixels |
|[[$:/info/browser/darkmode]] |<<.from-version "5.3.6">> Is dark mode enabled? ("yes" or "no") |
|[[$:/info/darkmode]] |<<.deprecated-since "5.3.6">> Alias for  $:/info/browser/darkmode |
|[[$:/info/node]] |Running under [[Node.js]]? ("yes" or "no") |
|[[$:/info/url/full]] |<<.from-version "5.1.14">> Full URL of wiki (eg, ''<<example full>>'') |
|[[$:/info/url/host]] |<<.from-version "5.1.14">> Host portion of URL of wiki (eg, ''<<example host>>'') |
|[[$:/info/url/hostname]] |<<.from-version "5.1.14">> Hostname portion of URL of wiki (eg, ''<<example hostname>>'') |
|[[$:/info/url/origin]] |<<.from-version "5.1.14">> Origin portion of URL of wiki (eg, ''<<example origin>>'') |
|[[$:/info/url/pathname]] |<<.from-version "5.1.14">> Pathname portion of URL of wiki (eg, ''<<example pathname>>'') |
|[[$:/info/url/port]] |<<.from-version "5.1.14">> Port portion of URL of wiki (eg, ''<<example port>>'') |
|[[$:/info/url/protocol]] |<<.from-version "5.1.14">> Protocol portion of URL of wiki (eg, ''<<example protocol>>'') |
|[[$:/info/url/search]] |<<.from-version "5.1.14">> Search portion of URL of wiki (eg, ''<<example search>>'') |